242 BOTANY. smooth, reddish capsules, the black, scantily viUous scales, and the leaves colored alike on both sides; aments somewhat as in S. Novcb Anglice, var. pseudo-myrsinites, Anders., but that has beaked capsules and glabrous, crenate leaves, which are membranous in texture and prominently reticu¬ late-veined. Salix eeticulata, L. (Watson, vol. v. King's Report, p. 327; Porter, Fl Col. 128).—Half Moon Creek, Colorado, at 13,000 feet elevation (830). PopuLus MONiLiFEEA, Ait—Nevada. PopuLUS BALSAMiFEEA, L., var. ANGUSTIFOLIA, Watsou.—Nevada and Utah, and San Luis VaUey and Denver, Colo. (833, 834). Var. candicans. Gray, Colorado (835). PopuLus TEEMULOIDES, Michx.—Sau Fraucisco Mountains, Arizona; also South Park, Colorado (832). PopuLUS ANGULATA, Ait—Denver (831). EUPHORBIACE^. By De. Geoege Engblmaiw. Ceoton coeymbulosus.—Many erect stems from a ligneous base, a span to a foot high, simple below, branching upward; stipules subulate, deciduous; petioles about half as long as the oval or oblong, mostly acutish, leaves, which are |-14' long, the lowest ones broader and shorter and often acutish at base, all triplinerved at base, penninerved upward, whitish below, greenish-gray above; stellate hairs slightly united to scales above, almost free and loose below; inflorescence short, loose-fiowered, corymb-like, 6-8" wide, mostly monoecious; pedicels 2-3" long, much longer than the fiowers; male flowers with 5 spatulate or lanceolate bearded petals alter¬ nating with the 5 lobes of the disk; 6-13 stamens with bearded filaments; female flowers mostly apetalous; styles bifid to below the middle or usually to the base, and together with the ovary and the oblong (3" long) capsule stellate scaly; seeds linear-oblong, 2" long, delicately punctate-reticulate.— Camp Bowie, New Mexico, Rothrock, 1874 (506). Through Western Texas (Wright, 641,1805) into Mexico (SaltiUo and Buena Vista, Greg^ 71, 288). This species was first described by Torrey in Bot. Mex. Boundary, p. 194, under the name of C. Lindheimerianus, in which Mliller, DC. Prod. 15, 2, 579, followed him. But Scheele's plant thus named and described in